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Factors limiting anaerobic performance in adolescent males with cystic fibrosis.
Med Sci Sports Exerc 1996; 28(3):291-8MS

Abstract

Forty-one adolescent males (11.1-18.3 yr) with cystic fibrosis (CF) and 37 healthy adolescent males (11.1-17.9 yr) performed a Wingate Anaerobic Test (WAnT). The group with CF was subdivided by sexual maturity, nutritional status, and degree of airway obstruction. The subjects with CF had lower absolute power outputs than the healthy controls [mean power in Watts (mean +/- SD): 350.2 +/- 135.9 vs 424.5 +/- 120.4, P < 0.001; peak power: 525.2 +/- 178.4 vs 665.9 +/- 191.3, P < 0.001). When absolute power was corrected for lean body mass, the subjects with CF had lower power outputs than the healthy controls (mean power in W.kg-1: 8.9 +/- 1.7 vs 9.6 +/- 0.9, P < 0.05; peak power: 13.4 +/- 2.1 vs 15.0 +/- 1.6, P < 0.05). The subgroup with CF with a higher body mass index (BMI > 17.5 kg.m-2) had higher peak and mean power output than subjects with CF with a lower BMI in both absolute power and when power was expressed per lean body mass. When sexual maturation was considered, subjects with CF with salivary testosterone greater than 4.0 ng.dl-1 had a higher mean and peak power in both absolute terms and relative to lean body mass than subjects with CF with salivary testosterone less than 4.0 ng.dl-1. Multiple regression analysis indicated that the nutritional factor accounted for 70%-80% of the variability in power output in the subjects with CF, while testosterone accounted for 10% of the variability. Pulmonary function was not a significant independent correlate of anaerobic power. Our results suggest that nutritional status, and to a lesser extent maturational factors, may play a more important role than pulmonary function in determining anaerobic fitness in male adolescents with CF.

Authors+Show Affiliations

Cystic Fibrosis Center, University of Pittsburgh, PA, USA.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

8776217

Citation

Boas, S R., et al. "Factors Limiting Anaerobic Performance in Adolescent Males With Cystic Fibrosis." Medicine and Science in Sports and Exercise, vol. 28, no. 3, 1996, pp. 291-8.
Boas SR, Joswiak ML, Nixon PA, et al. Factors limiting anaerobic performance in adolescent males with cystic fibrosis. Med Sci Sports Exerc. 1996;28(3):291-8.
Boas, S. R., Joswiak, M. L., Nixon, P. A., Fulton, J. A., & Orenstein, D. M. (1996). Factors limiting anaerobic performance in adolescent males with cystic fibrosis. Medicine and Science in Sports and Exercise, 28(3), pp. 291-8.
Boas SR, et al. Factors Limiting Anaerobic Performance in Adolescent Males With Cystic Fibrosis. Med Sci Sports Exerc. 1996;28(3):291-8. PubMed PMID: 8776217.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Factors limiting anaerobic performance in adolescent males with cystic fibrosis. AU - Boas,S R, AU - Joswiak,M L, AU - Nixon,P A, AU - Fulton,J A, AU - Orenstein,D M, PY - 1996/3/1/pubmed PY - 1996/3/1/medline PY - 1996/3/1/entrez SP - 291 EP - 8 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 28 IS - 3 N2 - Forty-one adolescent males (11.1-18.3 yr) with cystic fibrosis (CF) and 37 healthy adolescent males (11.1-17.9 yr) performed a Wingate Anaerobic Test (WAnT). The group with CF was subdivided by sexual maturity, nutritional status, and degree of airway obstruction. The subjects with CF had lower absolute power outputs than the healthy controls [mean power in Watts (mean +/- SD): 350.2 +/- 135.9 vs 424.5 +/- 120.4, P < 0.001; peak power: 525.2 +/- 178.4 vs 665.9 +/- 191.3, P < 0.001). When absolute power was corrected for lean body mass, the subjects with CF had lower power outputs than the healthy controls (mean power in W.kg-1: 8.9 +/- 1.7 vs 9.6 +/- 0.9, P < 0.05; peak power: 13.4 +/- 2.1 vs 15.0 +/- 1.6, P < 0.05). The subgroup with CF with a higher body mass index (BMI > 17.5 kg.m-2) had higher peak and mean power output than subjects with CF with a lower BMI in both absolute power and when power was expressed per lean body mass. When sexual maturation was considered, subjects with CF with salivary testosterone greater than 4.0 ng.dl-1 had a higher mean and peak power in both absolute terms and relative to lean body mass than subjects with CF with salivary testosterone less than 4.0 ng.dl-1. Multiple regression analysis indicated that the nutritional factor accounted for 70%-80% of the variability in power output in the subjects with CF, while testosterone accounted for 10% of the variability. Pulmonary function was not a significant independent correlate of anaerobic power. Our results suggest that nutritional status, and to a lesser extent maturational factors, may play a more important role than pulmonary function in determining anaerobic fitness in male adolescents with CF. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/8776217/Factors_limiting_anaerobic_performance_in_adolescent_males_with_cystic_fibrosis_ L2 - http://Insights.ovid.com/pubmed?pmid=8776217 DB - PRIME DP - Unbound Medicine ER -